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to customers. The security updates will be released Nov. 10 as part of the software maker's monthly Patch Tuesday cycle.

Security experts said one of the bulletins, which addresses flaws that could result in a denial-of-service condition, applies to nearly all Windows versions and may be the most serious. HD Moore, chief security officer and chief architect of Metasploit, said the flaw could be to a common API such as a graphics display interface (GDI).

Last month Microsoft issued 13 bulletins, patching a record 34 vulnerabilities across its product line. One of the October bulletins, MS09-054, which addressed four flaws in Internet Explorer, was reissued by Microsoft this week to repair a problem with the patch. The update caused IE to render webpages improperly by miscalculating objects on the page.

Microsoft's October bulletins also contained the first security update for Windows 7, addressing ActiveX control issues as a result of components built using a flawed version of Microsoft Active Template Library.

Major IT companies like Black Hat and Google spoke out against the proposed Wassenaar Arrangement rules for cybersecurity software, and those protests have caused the U.S. Dept. of Commerce to commit to drafting new rules.

News roundup: New threats add to the Tor anonymity debate as a new browser aims to take anonymous browsing to the next level. Plus: Android security outlook bad -- or is it?; another Xen host escape flaw; Wassenaar revisions put on hold.